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Updated: Sep 11, 2025

Atomic Layer Deposition of Vanadium Dioxide and a Temperature-dependent Optical Model
Published on: May 23, 2018
Impulse response modeling of vanadium dioxide microbolometers at different pulse repetition frequencies
Abstract:
This paper investigates the optical absorption characteristics of uncooled vanadium dioxide (VO2) microbolometers at different temperatures and wavelengths. Based on the optical properties of VO2 materials and typical microbolometer structures, a model of their impulse response at different pulse repetition frequencies is constructed under transient Dirichlet conditions. Under the same average power, the higher the pulse repetition frequency is, the higher the laser energy efficiency and the higher the grayscale value. Experimental measurements are conducted on the irradiation characteristics of a low pulse repetition frequency laser, and the results are consistent with the simulation results, both showing a step effect near 200 Hz. These results will contribute to the application of VO2 microbolometers in active imaging and laser detection fields.
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